单项选择题

A.Allow all inbound VPN traffic to pass through the internal firewall and the perimeter firewall.
B.Allow all inbound VPN traffic to pass through the perimeter firewall only.  
C.Allow all VPN traffic from the source IP address of 131.107.1.14 to pass through the internal firewall.
D.Allow all VPN traffic from the source IP address of 191.168.1.0/24 to pass through the perimeter firewall.